Question

A billiard ball moving at 5.60 m/s strikesa stationary ball of the
same mass. After the collision, the firstball moves at 4.75 m/s, at
an angle of+32.0° withrespect to the original line of motion.
Assuming an elasticcollision (and ignoring friction and rotational
motion), find thestruck ball's velocity after the collision. m/s
(magnitude)° (with respect
tothe original line of motion)